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Join Date: Jan 2010
Posts: 140
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Rebuild the DFI engine?????
Hi,
Is it possible to rebuild the new DFI engine?? If the cylinders are welded to the crank case, how is it possible to remove the pistons? I asked this in another forum and got no answer, I hope to get some answers here. Thanks. |
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05-02-2010, 07:32 AM
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the case splits in half the pistons are installed as the case comes together.
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05-02-2010, 08:04 AM
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Posts: 140
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Its like trying to put the pistons from the bottom of the V8 engine. how you gonna attach the tool to compress the rings and position the big case and cylinders over the pistons?
I think at the factory they put the pistons and cylinders in, then they weld the cylinders to the case. |
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05-02-2010, 12:03 PM
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the case is put together with the cranks and connecting rods assembled. then the pistons are installed from the outside. the piston pins are installed through a hole in the case one at a time then the circlips are installed after each pin. This is a very tedious job. it takes alot of time. If you can find the TV show Ultimate Factories they did the Porsche factory and they show a glimps of the assembly.
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05-02-2010, 02:26 PM
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Join Date: Jan 2009
Location: Reno, NV
Posts: 180
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That was a fun show to watch! Basically that is the way the piston assembly goes. The cylinders are not "welded" on, they are cast together with the case halves in a similar manner to the old M96/97 motors but it's a homogeneous material(Alusil) instead of being cast around Locasil liners.
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Don Weaver-EBS Racing don@ebsracing.com 2006 Cayman S '86 944T '00 Boxster with EBS Racing 3.4 liter engine |
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05-02-2010, 07:34 PM
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Sheeple Herder
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Mark aka- badcar 07' Cayman S-it turns good 02' C4S-traded for a big truck... 91 964 C4 (smile producer) gone... 99' Boxster (Frida)sold-miss it dearly |
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05-03-2010, 12:21 PM
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lufty
TBD
